Removing the Cover
You need to remove the computer’s cover to install any of the options described in this chapter or to install or remove a disk drive (as described in Chapter 5). Follow these steps:
1.Turn off the computer and then any peripheral devices (including the monitor and printer).
2.Disconnect the computer’s power cable from the electrical outlet and from the back panel. Also disconnect any cables that are connected to the computer, including the keyboard and mouse cables.
3.If the monitor is on top of the computer, lift it off and set it to one side.
4.Remove the three screws securing the back panel, as shown below.
4 - 4 Installing and Removing Options